In this paper we present an analysis of some generalization of the classic urn and balls model.In our model each urn has a fixed capacity and initially is filled with white balls.Black balls are added to the system of connected urns and gradually displace white balls.We show a general form of formulas Collections for the expected numbers of black b
Nutrients are vital for plant subsistence and growth in nutrient-poor and arid ecosystems.The deep roots of phreatophytic plants are necessary to access groundwater, which is the major source of nutrients for phreatophytes in an arid desert ecosystem.However, the mechanisms through which changes in groundwater depth affect nutrient cycles of phreat
The article presents the adaptation process of the modified Spenn-Fisher code of co-dependence, which allows to measure the severity of co-dependency.The study was conducted on a sample of students (N=227) and cadets (N=38) of higher educational institutions.The theoretical construct of codependency as a psychosocial state, which includes an extern